package com.icbc.dccsh.functions;

import java.util.HashMap;

public class HistoryFormulaEngine extends FormulaEngine {
	// e.g. formula = "average(_all_)", then variablesValueList is
	// {x=1, y=2, z=3}
	@Override
	public FormulaEngine variables(HashMap<String, Object> variableNameValueMapping) {
		this._variableNames = new String[2];
		this._variableNames[0] = "current_v";
		this._variableNames[1] = "prior_v";
		
		HashMap<String, Object> variableName_value_mapping = new HashMap<String, Object>();
		
		this._variableName_value_mapping = new HashMap<String, Object>();
		return this;
	}
}
